Low‑Carb • Practical • UK Edition
Keto for fat loss and muscle tone
Clear, realistic guidance for going low‑carb/keto, whether you train at our Southport gym or at home: what to eat, how to avoid the “keto flu”, simple macros, shopping list, and a 7‑day starter menu.
Read this first
Important Nutrition Disclaimer
We’re not registered dietitians or medical professionals. This guide is for information only and isn’t intended to diagnose, treat, cure, or prevent any condition. If you are pregnant, breastfeeding, have diabetes, kidney or liver issues, a history of disordered eating, or take prescription medication, consult a healthcare professional before starting.
Foundations
What is Keto?
Keto (ketogenic) means substantially reducing carbohydrate intake so your body shifts from using blood glucose as its main fuel to producing ketones from fat (nutritional ketosis). Keto is not zero‑carb. Most people do well at 20–50 g net carbs per day (net = total carbs minus fibre), and for many it’s a practical approach to weight loss when paired with sensible portions and protein.
Upsides people often report
- Reduced hunger and fewer cravings
- More stable energy and mood
- Fat loss while preserving muscle (with adequate protein)
Common challenges
- Week‑1 dip (“keto flu”)
- Eating out & social events need a plan
Week 1
The Transition (“Keto Flu”)
First 3–6 days (sometimes up to two weeks) you may feel tired, foggy, headachy or irritable. This comes from fluid & electrolyte shifts as insulin drops and kidneys excrete more sodium and water.
Hydration
Drink 2–3 L water daily.
Electrolytes
Approx. 3–5 g salt daily (1.5–2 tsp) split across meals/broth; potassium from foods (avocado, spinach, mushrooms) or a low‑sugar electrolyte; magnesium 300–400 mg from foods or a supplement if advised.
Calories
Don’t undereat: keep protein up and fats to satisfaction.
Training
Keep hard sessions lighter in week one; resume intensity as you adapt.
If symptoms are severe or persistent, stop and speak to a professional.
Numbers (simple)
Macro Basics
- Carbs: start at 20–30 g net/day; titrate up after 2–3 weeks if progress and how you feel remain good.
- Protein: 1.6–2.2 g per kg of goal body weight daily (protects muscle & satiety).
- Fat: fill the rest of calories from healthy fats; don’t force‑feed fat.
Example (70 kg woman → goal 65 kg): Protein 110–140 g/day; Carbs 20–30 g net; Fats to appetite (≈60–100 g), adjusted to hunger, training & results.
What to eat
Foods to Prioritise
Proteins
Meat (beef, lamb, pork, game), poultry, fish/seafood (salmon, mackerel, sardines, prawns, white fish), eggs, dairy (Greek yoghurt, cottage cheese, cheese), tofu/tempeh/seitan (check carbs).
Non‑starchy veg
Leafy greens, broccoli, cauliflower, courgette, asparagus, mushrooms, peppers, green beans, cabbage, cucumbers.
Fats & flavour
Olive oil, avocado, butter/ghee, olives, avocado, nuts & seeds (watch portions; cashews higher‑carb), nut butters (no added sugar), herbs, spices, vinegar, lemon/lime, mustard, mayonnaise (check labels), full‑fat dressings, cocoa powder, sugar‑free sauces without maltodextrin.
Drinks
Water, coffee/tea, herbals; unsweetened almond/soya milk. Beware barista milks and sweetened versions.
Usually avoid
Foods to Limit
- Sugary foods/drinks: soft drinks, fruit juice, sweets, cakes, biscuits, pastries
- Starches & grains: bread, rice, pasta, couscous, most cereals, oats
- Starchy veg: potatoes, sweet potatoes, parsnips (small amounts only if budgeted)
- Most beers (prefer spirits + diet mixers, or dry wine)
- High‑sugar fruit: bananas, grapes, mango (use berries sparingly)
- Highly processed fats: some margarines & seed‑oil spreads
Sweeteners: erythritol/stevia blends are often best. If sweeteners trigger cravings or stall progress, reduce or remove.
Real life
Eating Out, Flex Meals & Alcohol
- Lead with protein + veg; swap chips for salad/greens; sauces on the side.
- One meal won’t make or break you—get back to plan next meal.
- Post higher‑carb meal: expect water weight; hydrate, prioritise protein and greens.
Alcohol: choose dry wine or spirits with calorie‑free mixers. Alcohol can slow fat loss and impair sleep—set a weekly cap (e.g., 0–4 drinks).
Optional boosts
Supplements
- Electrolytes as above
- Omega‑3 if low oily‑fish intake
- Vitamin D3 in winter or if low
- Creatine 3–5 g/day for training performance
Always check interactions with any medications.
Make it easy
Smart Tips
- Batch‑cook chilli, curry, casseroles; freeze portions.
- Build easy defaults: eggs + spinach; salmon + greens; burger bowl; chicken‑thigh tray‑bake.
- Read labels: hidden sugars/starches (maltodextrin), “low‑fat” traps.
- Caffeine is fine; watch milky coffees and evening intake.
- Ketone strips are optional—focus on consistency and how you feel.
- Training: 2–4×/week resistance + daily walking, whether that’s during a friendly bootcamp or a quiet personal training session.
FAQs
Common Questions
Do I have to count calories?
Not initially. Many naturally eat fewer calories on keto. If fat loss stalls, track for a week to check portions.
Vegetarian keto?
Emphasise eggs, dairy, tofu/tempeh, seitan, higher‑protein yoghurts. Watch carb creep from pulses and substitutes.
Is keto forever?
Some stay keto; others re‑introduce whole‑food carbs gradually (fruit, oats, potatoes), especially around training. Monitor how you feel.
Diabetes?
Keto can affect medication needs—see your GP/diabetes team first.
Final word
You’ve got this
Keto takes planning, but with a stocked kitchen, repeatable meals, and consistent habits it becomes second nature. Focus on protein, veg, smart fats, hydration, electrolytes, sleep, and review progress every 2–3 weeks.
Quick start
Handy Portion Guide
- Protein Palm‑sized per meal
- Veg Two fists of non‑starchy
- Fats One–two thumbs added
Adjust to appetite, training and results.
Menu
7‑Day Starter Ideas
Breakfast (or skip)
- Scrambled eggs + smoked salmon + spinach
- Greek yoghurt (200 g, full‑fat) + berries + chia
- Mushroom, pepper & feta omelette
Lunch
- Chicken, bacon & avocado salad (olive‑oil dressing)
- Tuna mayo lettuce boats + cucumber + olives
- Leftover dinner protein + big salad/greens
Dinner
- Chilli con carne over cauliflower rice
- Chicken‑thigh tray‑bake (peppers, onions, courgette)
- Salmon + pesto + tenderstem broccoli
- Courgette “zoodles” + beef bolognese + parmesan
- Pork steaks + creamy cabbage
Snacks (if needed)
- Boiled eggs • cheese • olives • almonds
- Celery + cream cheese • Greek yoghurt
- Protein shake (≤2 g carbs/serving)
Shop
Simple Shopping List
- Protein: eggs; chicken thighs; mince; sausages (check carbs); salmon/white fish; bacon; tofu/tempeh
- Veg: spinach; salad mix; broccoli; cauliflower; peppers; mushrooms; courgettes; asparagus; green beans
- Fats & extras: olive oil; butter; avocado; olives; nuts/seeds; mayonnaise (no added sugar); pesto; herbs/spices
- Cupboard: passata/tinned tomatoes (check labels); coconut milk; stock cubes; frozen cauliflower rice; sugar‑free drinks
Safety
Who Should Check With a GP?
Pregnant or breastfeeding; diabetes; kidney/liver issues; on prescription meds; history of disordered eating.
This material is educational and not medical advice.
© Transform Ladies Fitness • Southport Mens Fitness – Southport, UK
More Keto Information
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